image-fit.c

/*
 * Copyright (c) 2013, Google Inc.
 *
 * (C) Copyright 2008 Semihalf
 *
 * (C) Copyright 2000-2006
 * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
 *
 * See file CREDITS for list of people who contributed to this
 * project.
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License as
 * published by the Free Software Foundation; either version 2 of
 * the License, or (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
 * MA 02111-1307 USA
 */

#ifdef USE_HOSTCC
#include "mkimage.h"
#include <image.h>
#include <time.h>
#else
#include <common.h>
#include <errno.h>
#include <asm/io.h>
DECLARE_GLOBAL_DATA_PTR;
#endif /* !USE_HOSTCC*/

#include <bootstage.h>
#include <sha1.h>
#include <u-boot/crc.h>
#include <u-boot/md5.h>

/*****************************************************************************/
/* New uImage format routines */
/*****************************************************************************/
#ifndef USE_HOSTCC
static int fit_parse_spec(const char *spec, char sepc, ulong addr_curr,
		ulong *addr, const char **name)
{
	const char *sep;

	*addr = addr_curr;
	*name = NULL;

	sep = strchr(spec, sepc);
	if (sep) {
		if (sep - spec > 0)
			*addr = simple_strtoul(spec, NULL, 16);

		*name = sep + 1;
		return 1;
	}

	return 0;
}

/**
 * fit_parse_conf - parse FIT configuration spec
 * @spec: input string, containing configuration spec
 * @add_curr: current image address (to be used as a possible default)
 * @addr: pointer to a ulong variable, will hold FIT image address of a given
 * configuration
 * @conf_name double pointer to a char, will hold pointer to a configuration
 * unit name
 *
 * fit_parse_conf() expects configuration spec in the for of [<addr>]#<conf>,
 * where <addr> is a FIT image address that contains configuration
 * with a <conf> unit name.
 *
 * Address part is optional, and if omitted default add_curr will
 * be used instead.
 *
 * returns:
 *     1 if spec is a valid configuration string,
 *     addr and conf_name are set accordingly
 *     0 otherwise
 */
int fit_parse_conf(const char *spec, ulong addr_curr,
		ulong *addr, const char **conf_name)
{
	return fit_parse_spec(spec, '#', addr_curr, addr, conf_name);
}

/**
 * fit_parse_subimage - parse FIT subimage spec
 * @spec: input string, containing subimage spec
 * @add_curr: current image address (to be used as a possible default)
 * @addr: pointer to a ulong variable, will hold FIT image address of a given
 * subimage
 * @image_name: double pointer to a char, will hold pointer to a subimage name
 *
 * fit_parse_subimage() expects subimage spec in the for of
 * [<addr>]:<subimage>, where <addr> is a FIT image address that contains
 * subimage with a <subimg> unit name.
 *
 * Address part is optional, and if omitted default add_curr will
 * be used instead.
 *
 * returns:
 *     1 if spec is a valid subimage string,
 *     addr and image_name are set accordingly
 *     0 otherwise
 */
int fit_parse_subimage(const char *spec, ulong addr_curr,
		ulong *addr, const char **image_name)
{
	return fit_parse_spec(spec, ':', addr_curr, addr, image_name);
}
#endif /* !USE_HOSTCC */

static void fit_get_debug(const void *fit, int noffset,
		char *prop_name, int err)
{
	debug("Can't get '%s' property from FIT 0x%08lx, node: offset %d, name %s (%s)\n",
	      prop_name, (ulong)fit, noffset, fit_get_name(fit, noffset, NULL),
	      fdt_strerror(err));
}

#if !defined(CONFIG_SPL_BUILD) || defined(CONFIG_FIT_SPL_PRINT)
/**
 * fit_print_contents - prints out the contents of the FIT format image
 * @fit: pointer to the FIT format image header
 * @p: pointer to prefix string
 *
 * fit_print_contents() formats a multi line FIT image contents description.
 * The routine prints out FIT image properties (root node level) follwed by
 * the details of each component image.
 *
 * returns:
 *     no returned results
 */
void fit_print_contents(const void *fit)
{
	char *desc;
	char *uname;
	int images_noffset;
	int confs_noffset;
	int noffset;
	int ndepth;
	int count = 0;
	int ret;
	const char *p;
	time_t timestamp;

	/* Indent string is defined in header image.h */
	p = IMAGE_INDENT_STRING;

	/* Root node properties */
	ret = fit_get_desc(fit, 0, &desc);
	printf("%sFIT description: ", p);
	if (ret)
		printf("unavailable\n");
	else
		printf("%s\n", desc);

	if (IMAGE_ENABLE_TIMESTAMP) {
		ret = fit_get_timestamp(fit, 0, &timestamp);
		printf("%sCreated:         ", p);
		if (ret)
			printf("unavailable\n");
		else
			genimg_print_time(timestamp);
	}

	/* Find images parent node offset */
	images_noffset = fdt_path_offset(fit, FIT_IMAGES_PATH);
	if (images_noffset < 0) {
		printf("Can't find images parent node '%s' (%s)\n",
		       FIT_IMAGES_PATH, fdt_strerror(images_noffset));
		return;
	}

	/* Process its subnodes, print out component images details */
	for (ndepth = 0, count = 0,
		noffset = fdt_next_node(fit, images_noffset, &ndepth);
	     (noffset >= 0) && (ndepth > 0);
	     noffset = fdt_next_node(fit, noffset, &ndepth)) {
		if (ndepth == 1) {
			/*
			 * Direct child node of the images parent node,
			 * i.e. component image node.
			 */
			printf("%s Image %u (%s)\n", p, count++,
			       fit_get_name(fit, noffset, NULL));

			fit_image_print(fit, noffset, p);
		}
	}